Teat-cup for milking-machines



W. H. AND M. KOCH. TEAT CUP FOR MILKING MACHINES. APPLICATION FILED JULY24, I918.

Patented July 1, 1919.

. HHHHRQQRR$ i M n? N b, y whh nmw m wfl inwa Z 6 x proved device, andFig. '2 is a detail perspec- UNITED STATES PATENT- orri WILLIAM H. KOCHAND MICHAEL KOCH, or INDEPENDENCE, Iowa.

TEAT-CUP FOR MILKINGMACHI1\TES.'

Specification of Letters Patent.

Patented July 1., 1919.

Application filed July 24, 1918. Serial No. 246,573.

teatrcups for milking machines, and the object of our invention is tofurnish for use with .13 milking-machine a teat-cup having a combinedrigid housing and a dilferentially-flexible teatfcup therein, the devicehavingbattling-means included for divertinc" supply of compressed air toact initially upon the teat-receiving end of the teat-cup, and theteat-cup itself-being so formed at its teat-receiving end as tofacilit'ate the process of milking therewith.

This object we have accomplished by the .means which are hereinafterdescribed and claimed, and which are illustrated in the accompanyingdrawings, in which Figure l is a' central longitudinal section of ourimtive view of the air-bafiling sleeve thereof.

In said drawings, similar numerals of reference denote correspondingparts throughout the several views.

Our improved teat-cup has a rigid tubular housing 1, whose centrallongitudinal bore 20 is widest at the teat-receiving end, and diminishedmedially at 15, the latter part of its bore leading by way of a stillgreater diminished bore through a narrowed nipple 6 into a removablenipple 7, the latter delivering into a flexible milk-duct 8, the part'7Y' h-aving a threaded connection with the gpart 6.

l stll d housing has on its wider part an oblique boss 3 which has anobl que passage 21 in communication with the bore part 20,

and a short section of tube 4 is fitted in said passage 21 to projecttherefrom and have one end of a flexible tube 5 fitted thereover tocommunicate therewith and convey through the tube a and passage 21compressed air from a source not shown.

lVhere the housing bore 20 is abruptly diminished provide an interiorannular shoulder :9, a tubular sleeve 10 of rigid structure islgpositioned in said Wider bore 20 to'be iced concentrically from theinner Wall thereof, and has at one end an outwardly directed annularflange 12-.situated near the shoulder 9, and at the, other end anoutward ly directed .gannular {flange 1% adapted to seat itself on thecircular edge of the-outer or teat-receiving part of said housing.

The numeral 16 denotes a hollow or tubu lar teat-cup member having atone end an outwardly directed annular flange which is engaged betweenthe shoulder S) and the flange 12 of the rigid sleeve '10, when themember 16 is assembled with said sleeve, being positioned within itconcentrically, and both placed in the housing in the manner shown. Themember 16 is gradually and progressively diminished in thickness fromits said flange to its opposite or teatreceivingend, the latter beinginverted outwardly at 18 to provide a thin annular ring,

with annular hollow 19, and terminating in an outwardly-directed annularflat flange 13 which contacts and registers with the un- (lei-lyingsleeve flange 14. An annular clamping-ring 2 is threaded upon the outerend of the housing-end and has an interior annular shoulder whichcontacts with the flange 13 in registration to clamp the flanges 13 and14 tightly to the outer end of the housing. The ring 2 extends well upabout the outer wall of the thin ring-part 18 of said teat-cup 1G toprotect it from abrasion.

The neck ofthe teat-cup 16 is formed with an outwardly extending annularcrimp 17 which serves to keep the neck part in tubular shape and alsoafi'ords a slack portion so that the neck of the teat-cup may collapseinwardly at times.

into the teat-cup 16, and vacuum induced within the teat-cup by Way ofthe flexible tube Sleading to an air-,pump not shown, and compressed airis passed through the tube 5, passage 21', bore 20 and orifices 11 intothe interspace 22 at intervals, the thinner part of the teat-cup isinitially compressed andcollapsed upon the teat near the .rout orjunction of the teat with the udder,

whereb a natn 'al stripping action is exercised upon the teat to drivecontained milk into the din'iinished bore 15, and thence into the tube8.

The orifices 11 are positioned nearestthe teat-receiving part of theteat-cup. whereby the initial compression of the passing air isproduced. upon the thinner part of the teatcup first, and compressionspreads thence to the other parts of the cup progressively as in naturalmilking to strip the teat. The soft and readily compressible ringqpa rt18 of the teat-cup acts as an air-cushion abut.- ting upon andcontacting with the root of the teat. while the crimp 1? permits thecollapse of the teat-cup at this point by its necessary slackness.

The action of the device thus imitates closely the natural stripping ofa tent by the young of the animal. and conduces to effectiveness inmilk-delivery and the comfort of the animal. while the teat-cup becauseof its slack inner wall, elastically gives to adjusting-l3 conformitself to the teat.

Having described our invention, what we claim as new, and desire tosecure by Letters Patent, is:

1. In combination. a rigid housing. a rigid bathing-sleeve mountedtherein and spaced therefrom removably with its ends closed against thehousing. and a flexible teat-cup positioned within the sleeve and spacedtherefrom with its ends closed against the- 1,30s,0ee

sleeve, said sleeve having ports adjacent its end at theontwardly-opening end of the teat-cup, and said housing having a portcommunicating with the interspace'of the housing and sleeve.

2. In coi'nbination, a rigid housing, a rigid battling-sleeve mountedtherein and spaced therefron'i with its ends closed thereagainst, and aflexible teat-cup positioned within the sleeve and having its endsclosed thereagainst. said sleeve having ports leading from theinter-space of the housing and sleeve to the interspace of the sleeveand teat-cup. and the teat-receiving end of the teat-cup beingdiminished in thickness and inverted outwardly and closed against said.housing.

3. In combination, a rigid housing, a rigid battling-sleeve mountedthereinand spaced therefrom with its ends closed thereagainst, and aflexible teat-cup positioned within the sleeve and having its endsclosed thereagainst and against the housing, the teatreceiving end ofthe teat-cup being diminished in thickness, inverted outwardlyannularly, and having an annular crimp around its diminished neckadjacent to its said inverted part, and said sleeve and. housing havingcommunicating ports to deliver compressed air against the thinner partof the teat-cup initially.

Signed at- IVaterloo, Iowa, this 20th day of July, 1918.

IVILLIAM H. KOCH. MICHAEL KOCH.

